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| Brand | Samsung |
|---|---|
| Model | PM1633a Series |
| Capacity | 7.68TB |
| Usage Class | Enterprise Data Center / Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 15mm |
|---|
| NAND Flash | Samsung 48-layer 3D V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 1200 MB/s |
|---|---|
| Sequential Write | 900 MB/s |
| Random Read IOPS | 190000 |
| Random Write IOPS | 32000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2.0 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS7T6HMLS-00007 |
|---|
For dual-port 12Gb/s SAS environments that still prioritize high availability over interface migration, the PM1633a MZILS7T6HMLS delivers a strong density-to-endurance balance with 7.68TB, 1 DWPD / 14,016 TBW, and up to 1200/900 MB/s plus 190K/32K IOPS—making it especially effective for read-intensive virtualization, database, and tier-1 enterprise storage pools. Compared with MZILS7T6HMLS-00007, this current-ordering MPN is the better choice for new qualifications and fleet standardization, preserving the proven PM1633a performance class while improving procurement continuity and lifecycle consistency for enterprise SAS deployments.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILS7T6HMLS is built to sustain a full drive write every day across its warranty period, which is more than sufficient for typical enterprise boot, read-intensive, and mixed-use workloads. In practical terms, for common system-disk or infrastructure applications, this level of endurance supports many years of stable operation with substantial write headroom, giving buyers confidence in long-term deployment. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protect metadata integrity during unexpected power interruptions, reducing the risk of corruption or unplanned recovery events. Its UBER of 1.0E-17 and 2 million hours MTBF indicate a very low probability of uncorrectable bit errors and strong overall dependability, which is exactly what procurement teams look for in business-critical storage.
1. The SAS 12Gb/s interface, paired with 1200 MB/s sequential read bandwidth, enables smooth data streaming and predictable throughput for shared enterprise storage, backup targets, and virtualization clusters.
2. With 190,000 K IOPS random read performance, the drive accelerates small-block access in database indexing, VDI boot storms, and metadata-heavy transactional workloads.
3. A 1 DWPD endurance rating makes it well suited for read-centric enterprise deployments that need dependable daily refresh capability without the cost profile of heavy write-optimized media.
4. Samsung 48-layer 3D V-NAND TLC delivers a strong balance of density, power efficiency, and cost effectiveness, helping data centers scale capacity while maintaining enterprise-grade flash reliability.
5. A typical latency of 110 µs helps reduce storage response time variance, improving application consistency for latency-sensitive services such as OLTP platforms and virtualized business applications.
Lower capacity reference: 3.84TB Higher capacity reference: 15.36TB Capacity positioning analysis: Within this enterprise SSD family, the 7.68TB version is the practical sweet spot. Compared with the 3.84TB model, it offers much better capacity headroom for mixed virtualization, database, and analytics workloads, reducing early expansion pressure while keeping the same class of sequential and random performance. Compared with the 15.36TB option, it reaches a better balance between acquisition cost, usable density, and predictable enterprise performance. It is especially well suited for mid-scale deployments, such as a shared storage tier supporting about 40 to 60 virtualized application servers.
Q: Is MZILS7T6HMLS suitable for a write-heavy database server?
A: MZILS7T6HMLS is better suited for mixed-use or read-intensive database workloads. With 1 DWPD endurance and 14,016 TBW, it can handle steady writes, but not highly write-heavy enterprise environments.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1 DWPD, meaning it supports one full 7.68TB drive write per day across its warranty period, aligned with its specified 14,016 TB total endurance.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected outages, which is critical for maintaining data integrity, consistency, and storage reliability in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is ideal for performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused deployments with acceptable write overhead.